[Bug]: ImapToDbSynchronizer mb_convert_encoding

[roukmoute]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• Nextcloud Server is running on 64bit capable CPU, PHP and OS.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

I've added an account mail and I've searched why it does not show me the main inbox.

I tried this:

> occ mail:account:sync 3

In ImapToDbSynchronizer.php line 255:
                                                                                                                   
  Sync failed for 3:INBOX: mb_convert_encoding(): Argument nextcloud/server#3 ($from_encoding) contains invalid encoding "windows  
  -1256"                                                                                                           
                                                                                                                   

In String.php line 160:
                                                                                                
  mb_convert_encoding(): Argument nextcloud/server#3 ($from_encoding) contains invalid encoding "windows-1256"  
                                                                                                

mail:account:sync [-f|--force] [--] <account-id>

Steps to reproduce

None

Expected behavior

occ mail:account:sync 3
XXMB of memory used

Installation method

Other

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.0

Web server

Nginx

Database engine version

MySQL

Is this bug present after an update or on a fresh install?

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

No response

List of activated Apps

Enabled:
  - bruteforcesettings: 2.4.0
  - calendar: 3.4.2
  - cloud_federation_api: 1.7.0
  - dav: 1.22.0
  - federatedfilesharing: 1.14.0
  - files: 1.19.0
  - lookup_server_connector: 1.12.0
  - mail: 1.13.6
  - oauth2: 1.12.0
  - provisioning_api: 1.14.0
  - settings: 1.6.0
  - twofactor_backupcodes: 1.13.0
  - viewer: 1.8.0
  - workflowengine: 2.6.0
Disabled:
  - accessibility: 1.10.0
  - activity: 2.16.0
  - admin_audit
  - circles: 24.0.0
  - comments: 1.14.0
  - contactsinteraction: 1.5.0
  - dashboard: 7.4.0
  - encryption
  - federation: 1.14.0
  - files_external
  - files_pdfviewer: 2.5.0
  - files_rightclick: 1.3.0
  - files_sharing: 1.16.2
  - files_trashbin: 1.14.0
  - files_versions: 1.17.0
  - files_videoplayer: 1.13.0
  - firstrunwizard: 2.13.0
  - logreader: 2.9.0
  - nextcloud_announcements: 1.13.0
  - notifications: 2.12.0
  - password_policy: 1.14.0
  - photos: 1.6.0
  - privacy: 1.8.0
  - recommendations: 1.3.0
  - serverinfo: 1.14.0
  - sharebymail: 1.14.0
  - support: 1.7.0
  - survey_client: 1.12.0
  - systemtags: 1.14.0
  - text: 3.5.1
  - theming: 1.15.0
  - updatenotification: 1.14.0
  - user_ldap
  - user_status: 1.4.0
  - weather_status: 1.4.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

{"reqId":"W5cHWV0y3mHJeHaWyVwo","level":3,"time":"2022-07-20T22:31:06+00:00","remoteAddr":"82.65.158.75","user":"roukmoute","app":"mail","method":"POST","url":"/apps/mail/api/mailboxes/134/sync","message":"Sync failed for 3:INBOX: mb_convert_encoding(): Argument nextcloud/server#3 ($from_encoding) contains invalid encoding \"windows-1256\"","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0","version":"24.0.3.2","exception":{"Exception":"OCA\\Mail\\Exception\\ServiceException","Message":"Sync failed for 3:INBOX: mb_convert_encoding(): Argument nextcloud/server#3 ($from_encoding) contains invalid encoding \"windows-1256\"","Code":0,"Trace":[{"file":"/config/www/nextcloud/apps/mail/lib/Service/Sync/SyncService.php","line":127,"function":"sync","class":"OCA\\Mail\\Service\\Sync\\ImapToDbSynchronizer","type":"->"},{"file":"/config/www/nextcloud/apps/mail/lib/Controller/MailboxesController.php","line":161,"function":"syncMailbox","class":"OCA\\Mail\\Service\\Sync\\SyncService","type":"->"},{"file":"/config/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":225,"function":"sync","class":"OCA\\Mail\\Controller\\MailboxesController","type":"->"},{"file":"/config/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":133,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/config/www/nextcloud/lib/private/AppFramework/App.php","line":172,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/config/www/nextcloud/lib/private/Route/Router.php","line":298,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/config/www/nextcloud/lib/base.php","line":1023,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/config/www/nextcloud/index.php","line":36,"function":"handleRequest","class":"OC","type":"::"}],"File":"/config/www/nextcloud/apps/mail/lib/Service/Sync/ImapToDbSynchronizer.php","Line":255,"Previous":{"Exception":"ValueError","Message":"mb_convert_encoding(): Argument nextcloud/server#3 ($from_encoding) contains invalid encoding \"windows-1256\"","Code":0,"Trace":[{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-util/lib/Horde/String.php","line":160,"function":"mb_convert_encoding"},{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-util/lib/Horde/String.php","line":96,"function":"_convertCharset","class":"Horde_String","type":"::"},{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime.php","line":259,"function":"convertCharset","class":"Horde_String","type":"::"},{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Headers/Element/Multiple.php","line":53,"function":"decode","class":"Horde_Mime","type":"::"},{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Headers/Element.php","line":79,"function":"_setValue","class":"Horde_Mime_Headers_Element_Multiple","type":"->"},{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Headers/Element.php","line":56,"function":"setValue","class":"Horde_Mime_Headers_Element","type":"->"},{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Headers.php","line":201,"function":"__construct","class":"Horde_Mime_Headers_Element","type":"->"},{"file":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-mime/lib/Horde/Mime/Headers.php","line":371,"function":"addHeader","class":"Horde_Mime_Headers","type":"->"},{"file":"/config/www/nextcloud/apps/mail/lib/Model/IMAPMessage.php","line":186,"function":"parseHeaders","class":"Horde_Mime_Headers","type":"::"},{"file":"/config/www/nextcloud/apps/mail/lib/Model/IMAPMessage.php","line":723,"function":"getRawReferences","class":"OCA\\Mail\\Model\\IMAPMessage","type":"->"},{"file":"/config/www/nextcloud/apps/mail/lib/Service/Sync/ImapToDbSynchronizer.php","line":315,"function":"toDbMessage","class":"OCA\\Mail\\Model\\IMAPMessage","type":"->"},{"function":"OCA\\Mail\\Service\\Sync\\{closure}","class":"OCA\\Mail\\Service\\Sync\\ImapToDbSynchronizer","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/config/www/nextcloud/apps/mail/lib/Service/Sync/ImapToDbSynchronizer.php","line":316,"function":"array_map"},{"file":"/config/www/nextcloud/apps/mail/lib/Service/Sync/ImapToDbSynchronizer.php","line":231,"function":"runInitialSync","class":"OCA\\Mail\\Service\\Sync\\ImapToDbSynchronizer","type":"->"},{"file":"/config/www/nextcloud/apps/mail/lib/Service/Sync/SyncService.php","line":127,"function":"sync","class":"OCA\\Mail\\Service\\Sync\\ImapToDbSynchronizer","type":"->"},{"file":"/config/www/nextcloud/apps/mail/lib/Controller/MailboxesController.php","line":161,"function":"syncMailbox","class":"OCA\\Mail\\Service\\Sync\\SyncService","type":"->"},{"file":"/config/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":225,"function":"sync","class":"OCA\\Mail\\Controller\\MailboxesController","type":"->"},{"file":"/config/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":133,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/config/www/nextcloud/lib/private/AppFramework/App.php","line":172,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/config/www/nextcloud/lib/private/Route/Router.php","line":298,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/config/www/nextcloud/lib/base.php","line":1023,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/config/www/nextcloud/index.php","line":36,"function":"handleRequest","class":"OC","type":"::"}],"File":"/config/www/nextcloud/apps/mail/vendor/bytestream/horde-util/lib/Horde/String.php","Line":160},"message":"Sync failed for 3:INBOX: mb_convert_encoding(): Argument nextcloud/server#3 ($from_encoding) contains invalid encoding \"windows-1256\"","exception":{},"CustomMessage":"Sync failed for 3:INBOX: mb_convert_encoding(): Argument nextcloud/server#3 ($from_encoding) contains invalid encoding \"windows-1256\""}}

Additional info

No response

[miaulalala]

Duplicate of #5845, #1037